Electric switch



- l. R. 'SELTZER ELECTRIC SWITCH Filed March 10 1922 2 Sheets-Sheet i lb Z6 l. R. SELTZER ELECTRIC SWITCH Filed Match 10, 1922 2 Sheets$heet 2 NIT-E;

FFHCE.

IRA R. SELTZER', OF WATERIBURY, CONNECTICUT, ASSIGNOR TO THE GORDON EIIIJEG' TRIO MFG. 00., OF WATERVILLE, CONNECTICUT, A CORPORATION.

ELECTRIC- swrren.

Application filed. March 10, 1922. Serial No. 542,528.

To all whom it may concern:

Be it. known that I, IRA R. SEL'rzER, a citizen of the United States, residing at Waterbury, in the county of New Haven and State of Connecticulghave invented a new and useful Improvement in Electric Switches; and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in

Fi 1 a view in elevatlon of an electric switc embodying my invention. 4

Fig. 2 an enlarged view thereof with the casing removed.

Fig. 3 a corresponding view taken at a right angle to Fig. 2.

Fig. 4 a plan view thereof.

Fig. 5 a reverse planview' thereof.

Fig. 6 a view thereof in central and longitudinal section on the line 6-6 of 1.

Fig. 7 -adetached view of the two switchu1 is shown in line but separated from each other. i

' Fig. 8 adetached perspective view 'of the main-lineconnecting-bar. I 1 Fig. 9 aQcorrespondin view of the barlike terminal-extension o -one of the switch units.

This invention relates to an improvement in .electricj switches of the push throug'h type, the object being to produce, jatr 'a 'low cost of manufacture, a simple, compact, and reliable svvitch constructed with particular"- reference jto ease, simplicity, and; 'conven ience of manufacture. 7.

With these ends in v1ew,' my invention consists in aplurality of complete switch; units arranged in series and electrically interconnected but independently operable.

My invention further consists in a switch having certain details ofconstruction and combinations of parts as. will be .here1nafter described and poi'ntedout in the' 'claims. 1

In carrying 'out my invention, as herein shown, I employ two independently operable switch-units arranged infmechamcal series in a structure known as a two-circuit or three-heat control switch, such as used for heating electric padshaving two circuit-heatin'g elements. For" convenience of description, the two switch-units will'be gem erally designated 10 and 11. They are arranged in mechanicalseries end to end and insulated from each other by an interposed disk 12 of insulating material. these units has a porcelain or equivalent cy lindrical base 13, formed with several re- ,cesses, as will be described, and each base" carries a transversely arranged push-- throughsWitch-mechanism of approved construction' and herein shown as consisting of a frame 14, push-buttons, 15 and 16 arranged in a line, a rocker or actuator 17, operated by thesaid push-buttons and carried by a -fulcrum 18, forming an extension of the frame 14 and a circuit opening-and-closin member 19, having contact ears20, and held in its respective off and on positions by means of a helical spring 21. The said switch-mechanisms are located in deep recesses 22 in the bases 13, in which they are held by screws 23, for which centrally arrangedrecesses 24 are formed in the outer ends of the said-bases.

..'Each of the self-contained or unitary switch-units. above described is provided with a pair of'electric connections. Thus,

the switch-unit 10 isprovided with a'terw Each of the opposite ear 20 of thesaid part 19, is

held in place by the inwardly turned end 31 of'the coupling-bar32, which, in turn, .is held in place by a long screw 33, entered intca'threaded opening in the said 'end'31 is forniedfwith a corresponding inwardly turned end 351, having an opening for the reception ofrth'e inner end of a long screw 35, which secures the terminal-plate 36 to the 20f the saidbar 3 2, the opposite end of which 8 base 13 of the switch-unit 11; the said plate 36 carrying a binding-screw 37. Under this construction, the plates 25 and 36 form the terminal connections of thefswitch-unit 10. The said plate 36 also has the. additional function of acting as one of the two ter-c 'minals of the switch-unit 11, by virtue of the fact 'that. it is electricallyconnected with one of the two spring contact-fingers 38 thereof, the said finger being secured in coacts with; a corresponding contact-finger 39 which is held in place against the base 13 of the unit 11 by the head of ascrew 40,

the outer end'of which enters a threaded opening in the arm 41 of the bar -like terminal-extension 42 of the .unit 11, the said arm being held at'a right angle'to. the ex tension 42, as clearly shownin Fig. 9. K The opposite end of the said extension 42 is is slightly bent out of line and carries a. binds ing -screw 43. The said extension 42 lies in aligned longitudinal grooves 44, in the peripheries ofthe bases13 of the respective "units 10 and 11, as shown in Fig. 2. The. am said extension 42 and the plate 36 constitute the two terminals of the unit 11, just as the plate and the plate 36 constitutethe two terminals of the unit 10.

The connections thus far described are the 2,5 terminal connections of one side of the two circuits. The main-line side of the respective circuits is provided'for by a main-line connecting-bar 45 lying in aligned longitudinal grooves 46 in the peripheries of the respective bases 13, held in place by means ;of an insulating tube or lining 47 and provided atyits respective ends with bindingscrews 48 and 49 to which the line wire conof complementary independently organized nections are attached.

The two switch-units are enclosed within the said insulating lining 47, which in turn is located within a one-piece tubular shell 50, formed with perforations 51 for the passage of the push-buttons 15 and 16', and hav- 4'0 ing its ends closed bydomical caps 52, each having an insulating lining 53 and an insulating bushing 54. is afeature of my present constru'ctionthat when the. caps 52 r are "kregnoved,- all the" switch and maindine wires, which is a marked adv'a'ntage,since it avoids the necessity. of any disassembling of the mechanism, such as the removal of the shell 50 forming the main member of the housing.

It will be seen from the foregoing description that my improved electric switch embodies two independently organized and independently operable switch-units arranged in mechanical series, but electrically connected so as to permit them to be used independently or in conjunction so as to use either circuit or both.

I claim: -1. In an electric switch, the combination with a casing therefor, of a plurality of independently organized, independentlyoperable switch-units axially arranged within the said casing in mechanical series, and

The oppositeealr2 0 of the said member 19 connectio is,v describedare exposed and available for the attachment of the proper independently organized,

electrically connected for their operation independently or together and a main-line connector located within the said casing and extending beyond the outer ends of the said axially-arranged switch-units therein.

2; 'ln an electric, switch, the combination with a casing therefor, of a plurality of independently organized, independentlyoperablei switches axially arranged within with a tubular casing therefor, of a plurality of independently organized and independently-operable switch-units axially arranged within the said casing in mechanical series .andelectrically connected for their operation independently or together, with their terminal connections arranged at the opposite ends of the line of units so axially arranged, whereby the switch may be hooked up without removing it from its casing, and a main-line connecting-bar located within the said casing and extending, beyond the outer ends of the outer units of the line thereof, and provided at its ends with binding-posts.

4. An electric switch having a plurality and independently operable switch-units arranged in mechanical series, a shell enclosing the said units, and removable caps at the ends. of the shell, the terminals of the units being located at their outer ends, so as to beexposed on the removal of the caps without the removal of the shell. i 5. ,An electric switch having a plurality of independently'organized and independently operable switch-units arranged in mechanical series With their attaching terminals at their ends, a casing enclosing the said units, and a n1ain-line connecting-bar applied to the exterior peripheries of the said units and interposed between the same and the casing and reaching to the opposite ends of the combined units.

6. A switch having a plurality of independently organized and independently operable switch-units arranged in mechanical series with their attaching terminals exposed at the ends of the structure, a casing, for the said units when so combined, and a main terminal connecting-bar extending to the cnds'of the structure.

7. In an electric switch, the combination with a casing therefor, of a plurality of independentlyoperable switch-units, insulated from each other, axially arranged within the said casing in mechanical series, and electrically connected. for their operation independently or together for their independent or conjoint operation, a terminal, located at the outer end of one unit, being connected with the switch-mechanism of the other unit, and vice versa.

8. An electric switch having two independently organized and in&ependently operable switch-units arranged in mechanical series and each having e push-through vsWitch-noecheniSm, the terminal connections of the said units being exposed at their outer ends, and a terminal connection of one unit being connected with the switch-mechanism of the other unit, and vice "verse; 

